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. 2016 Feb 18;7:10790. doi: 10.1038/ncomms10790

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(a) the stiffness matrix Q_crit representing the auxiliary network. (b) The inverse stiffness matrix . The 57 node network contains 50 loads and 7 generators. Nodes are sorted and grouped by connected components of the subgraph induced by Q_crit, with connected components ordered from largest to smallest; nodes {1,…,48} are part of one large connected component, while nodes {49, 50} each constitute their own component. Colour scale represents normalized values of the matrix elements, with dark blue being zero and red being one. Diagonal elements of Q_crit are displayed in absolute value for clarity.

Inline graphic — (a) the stiffness matrix Q_crit representing the auxiliary network. (b) The inverse stiffness matrix . The 57 node network contains 50 loads and 7 generators. Nodes are sorted and grouped by connected components of the subgraph induced by Q_crit, with connected components ordered from largest to smallest; nodes {1,…,48} are part of one large connected component, while nodes {49, 50} each constitute their own component. Colour scale represents normalized values of the matrix elements, with dark blue being zero and red being one. Diagonal elements of Q_crit are displayed in absolute value for clarity.